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Poudretteite Mineral Data
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General Poudretteite Information
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Chemical Formula: |
KNa2B3Si12O30 |
Composition: |
Molecular Weight = 912.90 gm |
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Potassium 4.28 % K 5.16 % K2O |
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Sodium 5.04 % Na 6.79 % Na2O |
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Silicon 36.92 % Si 78.98 % SiO2 |
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Boron 1.18 % B 3.81 % B2O3 |
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Oxygen 52.58 % O |
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______ ______ |
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100.00 % 94.74 % = TOTAL OXIDE |
Empirical Formula: |
KNa2BSi12O30 |
Environment: |
In marble xenoliths within nepheline syenite breccias in an intrusive alkalic gabbro-syenite complex. |
IMA Status: |
Approved IMA 1987 |
Locality: |
From Mont Saint-Hilaire, Quebec, Canada. Link to MinDat.org Location Data. |
Name Origin: |
Named for the Poudrette family, operators of the quarry where type material was discovered. |
Name Pronunciation: |
Poudretteite + Pronunciation |
Synonym: |
IMA1986-028 |
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Poudretteite Image |
Images:
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Poudretteite
Comments: Pale pink gem fragment of poudretteite.
Location: Pyant-gyi mine, near Pein-pyit, Mogok, Sagaing Region, Mandalay Division, Burma.
Scale: See Image.
© Rruff Database |
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Poudretteite Crystallography
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Axial Ratios: |
a:c = 1:1.31702 |
Cell Dimensions: |
a = 10.239, c = 13.485, Z = 2; V = 1,224.33 Den(Calc)= 2.48 |
Crystal System: |
Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 6/mcc |
X Ray Diffraction: |
By Intensity(I/Io): 3.253(1), 5.13(1), 2.815(0.6), |
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Physical Properties of Poudretteite
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Cleavage: |
None |
Color: |
Colorless, Light pink. |
Density: |
2.51 |
Diaphaneity: |
Transparent |
Hardness: |
5 - Apatite |
Luster: |
Vitreous (Glassy) |
Streak: |
white |
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Optical Properties of Poudretteite
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Optical Data: |
NCalc= 1.48 - from Gladstone-Dale relationship (KC = 0.1955) where Ncalc=Dcalc*KC+1 NCalc= 1.49 - from Gladstone-Dale relationship (KC = 0.1955) where Ncalc=Dmeas*KC+1
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Calculated Properties of Poudretteite
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Electron Density: |
Bulk Density (Electron Density)=2.47 gm/cc note: Specific Gravity of Poudretteite =2.48 gm/cc. |
Fermion Index: |
Fermion Index = 0.01 Boson Index = 0.99 |
Photoelectric: |
PEPoudretteite = 1.96 barns/electron U=PEPoudretteite x relectron= 4.84 barns/cc. |
Radioactivity: |
GRapi = 61.48 (Gamma Ray American Petroleum Institute Units)
Concentration of Poudretteite per GRapi unit = 1.63 (%)
Estimated Radioactivity from Poudretteite - barely detectable
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Poudretteite Classification
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Dana Class: |
63.02.01a.08 (63)Cyclosilicate Condensed Rings |
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(63.02)6-membered rings |
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(63.02.01a)Milarite - Osumilite group (Milarite - Osumilite subgroup) |
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63.02.01a.01 Brannockite KSn2Li3Si12O30 P 6/mcc 6/m 2/m 2/m |
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63.02.01a.02 Chayesite K(Mg,Fe)4Fe(Si12O30) P 6/mcc 6/m 2/m 2/m |
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63.02.01a.03 Darapiosite KNa2Zr[Li(Mn,Zr)2Si12O30] P 6/mcc 6/m 2/m 2/m |
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63.02.01a.04 Eifelite KNa3Mg4Si12O30 P 6/mcc 6/m 2/m 2/m |
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63.02.01a.05 Merrihueite (K,Na)2(Fe,Mg)5Si12O30 P 6/mcc 6/m 2/m 2/m |
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63.02.01a.06 Osumilite-(Fe) (K,Na)(Fe,Mg)2(Al,Fe)3(Si,Al)12O30 P 6/mcc 6/m 2/m 2/m |
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63.02.01a.07 Osumilite-(Mg) (K,Na)(Mg,Fe)2(Al,Fe)3(Si,Al)12O30 P 6/mcc 6/m 2/m 2/m |
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63.02.01a.08 Poudretteite KNa2B3Si12O30 P 6/mcc 6/m 2/m 2/m |
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63.02.01a.09 Sugilite KNa2(Fe,Mn,Al)2Li3Si12O30 P 6/mcc 6/m 2/m 2/m |
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63.02.01a.10 Yagiite (Na,K)3Mg4(Al,Mg)6(Si,Al)24O60 P 6/mmc 6/m 2/m 2/m |
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63.02.01a.11 Dusmatovite K(K,Na,[])(Mn,Y,Zr)2(Zn,Li)3Si12O30 P 6/mcc 6/m 2/m 2/m |
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63.02.01a.12 Milarite K2Ca4Al2Be4Si24O60•(H2O) P 6/mcc 6/m 2/m 2/m |
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63.02.01a.13 Sogdianite (K,Na)2(Li,Fe,Al)3ZrSi12O30 P 6/mmm 6/m 2/m 2/m |
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63.02.01a.14 Roedderite (Na,K)2(Mg,Fe)5Si12O30 P 63/mmc 6/m 2/m 2/m |
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63.02.01a.15 Berezanskite! KLi3Ti2Si12O30 P 6/mcc 6/m 2/m 2/m |
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63.02.01a.16 Shibkovite! K(Ca,Mn,Na)2(K2-x,[]x)2ZnSi12O30(x~0.8) P 6/mcc 6/m 2/m 2/m |
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63.02.01a.17 Trattnerite! (Fe,Mg)2(Mg,Fe)3(Si12O30) P 6/mcc 6/m 2/m 2/m |
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63.02.01a.18 Almarudite! K([],Na)2(Mn,Fe,Mg)2(Be,Al)3[Si12O30] P 6/mcc 6/m 2/m 2/m |
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63.02.01a.19 Oftedalite! (Sc,Ca)2KBe3Si12O30 P 6/mmc 6/m 2/m 2/m |
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63.02.01a.20 Klochite ([]1Na1)KFe2Zn3[Si12O30] P 6/mcc 6/m 2/m 2/m |
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63.02.01a.21 Friedrichbeckeite! K([],Na)Mg2(Be2Mg)Si12O30 P 6/mcc 6/m 2/m 2/m |
Strunz Class: |
09.CM.05 09 - SILICATES (Germanates) |
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09.C - Cyclosilicates |
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09.CM -[Si6O18]12- 6-membered double rings (sechser-Doppelringe) |
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09.CM.05 Brannockite KSn2Li3Si12O30 P 6/mcc 6/m 2/m 2/m |
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09.CM.05 Armenite BaCa2Al6Si9O30•2(H2O) Pnc2 mm2 |
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09.CM.05 Berezanskite! KLi3Ti2Si12O30 P 6/mcc 6/m 2/m 2/m |
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09.CM.05 Dusmatovite K(K,Na,[])(Mn,Y,Zr)2(Zn,Li)3Si12O30 P 6/mcc 6/m 2/m 2/m |
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09.CM.05 Chayesite K(Mg,Fe)4Fe(Si12O30) P 6/mcc 6/m 2/m 2/m |
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09.CM.05 Shibkovite! K(Ca,Mn,Na)2(K2-x,[]x)2ZnSi12O30(x~0.8) P 6/mcc 6/m 2/m 2/m |
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09.CM.05 Eifelite KNa3Mg4Si12O30 P 6/mcc 6/m 2/m 2/m |
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09.CM.05 Darapiosite KNa2Zr[Li(Mn,Zr)2Si12O30] P 6/mcc 6/m 2/m 2/m |
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09.CM.05 Merrihueite (K,Na)2(Fe,Mg)5Si12O30 P 6/mcc 6/m 2/m 2/m |
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09.CM.05 Roedderite (Na,K)2(Mg,Fe)5Si12O30 P 63/mmc 6/m 2/m 2/m |
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09.CM.05 Milarite K2Ca4Al2Be4Si24O60•(H2O) P 6/mcc 6/m 2/m 2/m |
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09.CM.05 Osumilite-(Fe) (K,Na)(Fe,Mg)2(Al,Fe)3(Si,Al)12O30 P 6/mcc 6/m 2/m 2/m |
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09.CM.05 Osumilite-(Mg) (K,Na)(Mg,Fe)2(Al,Fe)3(Si,Al)12O30 P 6/mcc 6/m 2/m 2/m |
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09.CM.05 Poudretteite KNa2B3Si12O30 P 6/mcc 6/m 2/m 2/m |
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09.CM.05 Sugilite KNa2(Fe,Mn,Al)2Li3Si12O30 P 6/mcc 6/m 2/m 2/m |
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09.CM.05 Sogdianite (K,Na)2(Li,Fe,Al)3ZrSi12O30 P 6/mmm 6/m 2/m 2/m |
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09.CM.05 Oftedalite! (Sc,Ca)2KBe3Si12O30 P 6/mmc 6/m 2/m 2/m |
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09.CM.05 Yagiite (Na,K)3Mg4(Al,Mg)6(Si,Al)24O60 P 6/mmc 6/m 2/m 2/m |
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09.CM.05 Trattnerite! (Fe,Mg)2(Mg,Fe)3(Si12O30) P 6/mcc 6/m 2/m 2/m |
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09.CM.05 Almarudite! K([],Na)2(Mn,Fe,Mg)2(Be,Al)3[Si12O30] P 6/mcc 6/m 2/m 2/m |
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Other Poudretteite Information
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References: |
NAME( AntBidBlaNic2) PHYS. PROP.(Am.Min.,Vol.73,p1497,1988) |
See Also: |
Links to other databases for Poudretteite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST
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Print or Cut-and-Paste your Poudretteite Specimen Label here :
Poudretteite
KNa2B3Si12O30
Dana No: 63.02.01a.08 Strunz No: 09.CM.05
Locality:
Notes:
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